Police closed the eastbound lanes just east of Cape St. Claire Road shortly after 4 p.m. for about two hours as state environmental crews worked to identify the material. SkyTeam 11 reported placards on the trailer indicated the vehicle was carrying a poisonous substance.

SkyTeam 11 reported the backup leading to the scene extended as far back as the junction with Interstate 97, and back roads in the area were also jammed through 6 p.m.

Fire crews were in the process of clearing the scene by 6 p.m.

There is no word on whether charges will be filed against the driver.

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